CT is associated with relatively high radiation
exposure of patients and a significant contribution to the population
dose. It yields in Europe 30-40% of the collective dose due to diagnostic
radiology while representing only 3-6% of all x-ray examinations. The
latest developments in CT, in particular the introduction of sub second
multislice scanning, have had a great impact on medical care and radiation
protection. CT now allows for scanning large volumes and for scanning the
same body part several times within a short time span. The reduction of
movement artefacts with modern scanners is particularly beneficial in
paediatric CT and ECG-gated or triggered cardiac CT.
Isotropic 3D imaging and nowadays allows for better visualisation of
The consortium will perform research from which
innovations, new findings and practical guidelines for safety and efficacy
of CT will result. The main focus of the research will be on improving
radiation safety standards in Europe in relation to justification and
optimisation of computed tomography, thereby contributing also to the cost
effectiveness of health care.
Justification of CT should be achieved for
specific clinical problems taking into account the efficacy, (radiation)
safety and costs of CT. It also implies that use of alternative imaging
modalities are considered such as projection radiography, ultrasound and
The clinical implementation of CT, once justified,
should be optimised (Optimisation) to achieve good diagnostic
sensitivity with an associated radiation exposure of the patient that is
as low as reasonably achievable. This can be achieved by optimisation of
CT acquisition parameters, CT reconstruction parameters, the scanned
volume and contrast enhancement. Automatic exposure control for CT,
interventional CT, cardiac CT.
Paediatric CT and CT Dosimetry will be
topics of special focus for the research.
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